33efc8ec665e0b8d7eed24b455fcc39893eaa8cb6ba42a350c09c33df2a1ae73

General

Target

33efc8ec665e0b8d7eed24b455fcc39893eaa8cb6ba42a350c09c33df2a1ae73.exe
Size

55KB
MD5

2e011073ea2fe0f5a86cdade90eb195e
SHA1

a215d6cd9809a2a44acf52fe83ebf20e71364f9a
SHA256

33efc8ec665e0b8d7eed24b455fcc39893eaa8cb6ba42a350c09c33df2a1ae73
SHA512

fd5940ad525ad71aa045d7c61f890928b2ce8f8a9b88e8dfcc10341dd9dbd073f88c7fb63a96db4516dcb0c8e1bafe46694ca5c3de6b8baac6a09fe86b28d69d
SSDEEP

768:Oe3PFaDVyOQgljLDKRJyM3BmsHzSB4us/wJJapg4RoSMZeUZB/QosWpH+DrCUpfn:V3cpyORJLuB4P4AJJv4Romu/9tpvUZ3

Score

10^/10

evasion

Malware Config

Signatures

Modifies visibility of file extensions in Explorer 2 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1158

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\HideFileExt = "1"	33efc8ec665e0b8d7eed24b455fcc39893eaa8cb6ba42a350c09c33df2a1ae73.exe

Deletes itself 1 IoCs

pid	Process
604	cmd.exe

Loads dropped DLL 1 IoCs

pid	Process
1672	33efc8ec665e0b8d7eed24b455fcc39893eaa8cb6ba42a350c09c33df2a1ae73.exe

Drops desktop.ini file(s) 1 IoCs

description	ioc	Process
File opened for modification	C:\Program Files (x86)\Microsoft\ie13\Internat Explorer\Desktop.ini	33efc8ec665e0b8d7eed24b455fcc39893eaa8cb6ba42a350c09c33df2a1ae73.exe

Drops file in Program Files directory 3 IoCs

description	ioc	Process
File opened for modification	C:\Program Files (x86)\Microsoft\ie13\Internat Explorer\Desktop.ini	33efc8ec665e0b8d7eed24b455fcc39893eaa8cb6ba42a350c09c33df2a1ae73.exe
File created	C:\Program Files (x86)\Microsoft\ie13\Internat Explorer\target.lnk	33efc8ec665e0b8d7eed24b455fcc39893eaa8cb6ba42a350c09c33df2a1ae73.exe
File opened for modification	C:\Program Files (x86)\Microsoft\ie13\Internat Explorer	attrib.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Modifies registry class 9 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\jgpfile\DefaultIcon\ = "%1"	33efc8ec665e0b8d7eed24b455fcc39893eaa8cb6ba42a350c09c33df2a1ae73.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\jgpfile\shell\open\command	33efc8ec665e0b8d7eed24b455fcc39893eaa8cb6ba42a350c09c33df2a1ae73.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\jgpfile\shell	33efc8ec665e0b8d7eed24b455fcc39893eaa8cb6ba42a350c09c33df2a1ae73.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\jgpfile\shell\open	33efc8ec665e0b8d7eed24b455fcc39893eaa8cb6ba42a350c09c33df2a1ae73.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\jgpfile\DefaultIcon	33efc8ec665e0b8d7eed24b455fcc39893eaa8cb6ba42a350c09c33df2a1ae73.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.jgp\ = "jgpfile"	33efc8ec665e0b8d7eed24b455fcc39893eaa8cb6ba42a350c09c33df2a1ae73.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\jgpfile	33efc8ec665e0b8d7eed24b455fcc39893eaa8cb6ba42a350c09c33df2a1ae73.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\jgpfile\shell\open\command\ = "explorer \"C:\\Program Files (x86)\\Microsoft\\%*ie%S3\\%2Internat Explorer\""	33efc8ec665e0b8d7eed24b455fcc39893eaa8cb6ba42a350c09c33df2a1ae73.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.jgp	33efc8ec665e0b8d7eed24b455fcc39893eaa8cb6ba42a350c09c33df2a1ae73.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 1672 wrote to memory of 1540	1672	33efc8ec665e0b8d7eed24b455fcc39893eaa8cb6ba42a350c09c33df2a1ae73.exe	27
PID 1672 wrote to memory of 1540	1672	33efc8ec665e0b8d7eed24b455fcc39893eaa8cb6ba42a350c09c33df2a1ae73.exe	27
PID 1672 wrote to memory of 1540	1672	33efc8ec665e0b8d7eed24b455fcc39893eaa8cb6ba42a350c09c33df2a1ae73.exe	27
PID 1672 wrote to memory of 1540	1672	33efc8ec665e0b8d7eed24b455fcc39893eaa8cb6ba42a350c09c33df2a1ae73.exe	27
PID 1672 wrote to memory of 1540	1672	33efc8ec665e0b8d7eed24b455fcc39893eaa8cb6ba42a350c09c33df2a1ae73.exe	27
PID 1672 wrote to memory of 1540	1672	33efc8ec665e0b8d7eed24b455fcc39893eaa8cb6ba42a350c09c33df2a1ae73.exe	27
PID 1672 wrote to memory of 1540	1672	33efc8ec665e0b8d7eed24b455fcc39893eaa8cb6ba42a350c09c33df2a1ae73.exe	27
PID 1672 wrote to memory of 604	1672	33efc8ec665e0b8d7eed24b455fcc39893eaa8cb6ba42a350c09c33df2a1ae73.exe	30
PID 1672 wrote to memory of 604	1672	33efc8ec665e0b8d7eed24b455fcc39893eaa8cb6ba42a350c09c33df2a1ae73.exe	30
PID 1672 wrote to memory of 604	1672	33efc8ec665e0b8d7eed24b455fcc39893eaa8cb6ba42a350c09c33df2a1ae73.exe	30
PID 1672 wrote to memory of 604	1672	33efc8ec665e0b8d7eed24b455fcc39893eaa8cb6ba42a350c09c33df2a1ae73.exe	30
PID 1672 wrote to memory of 604	1672	33efc8ec665e0b8d7eed24b455fcc39893eaa8cb6ba42a350c09c33df2a1ae73.exe	30
PID 1672 wrote to memory of 604	1672	33efc8ec665e0b8d7eed24b455fcc39893eaa8cb6ba42a350c09c33df2a1ae73.exe	30
PID 1672 wrote to memory of 604	1672	33efc8ec665e0b8d7eed24b455fcc39893eaa8cb6ba42a350c09c33df2a1ae73.exe	30

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1158

pid	Process
1540	attrib.exe

C:\Users\Admin\AppData\Local\Temp\33efc8ec665e0b8d7eed24b455fcc39893eaa8cb6ba42a350c09c33df2a1ae73.exe
"C:\Users\Admin\AppData\Local\Temp\33efc8ec665e0b8d7eed24b455fcc39893eaa8cb6ba42a350c09c33df2a1ae73.exe"
1⤵
- Modifies visibility of file extensions in Explorer
- Loads dropped DLL
- Drops desktop.ini file(s)
- Drops file in Program Files directory
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:1672
- C:\Windows\SysWOW64\attrib.exe
  "C:\Windows\System32\attrib.exe" "C:\Program Files (x86)\Microsoft\ie13\Internat Explorer" +s
  2⤵
  - Drops file in Program Files directory
  - Views/modifies file attributes
  PID:1540
- C:\Windows\SysWOW64\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmp.bat" "
  2⤵
  - Deletes itself
  PID:604

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Hidden Files and Directories

2

T1158

Privilege Escalation

Defense Evasion

Hidden Files and Directories

Modify Registry

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp.bat

Filesize
250B

MD5
4cf5b98df67f16e5f2dc567f643a5644

SHA1
84910876bb53256270a1cf2e398a9b166392356d

SHA256
2b227f03e47f06f21a88d8ba109244644eb10f6b0e51aed9a6849e3a79fb6902

SHA512
a4865c2c7fbea13a5c70f82a9d63904c8ff0d44450afbe894b906af133358ced9662ce9cb496c85efb169d809ff74fc14ac9548f760d833ec531920095e569a5

Download Submit
\Users\Admin\AppData\Local\Temp\nst1C2B.tmp\System.dll

Filesize
11KB

MD5
00a0194c20ee912257df53bfe258ee4a

SHA1
d7b4e319bc5119024690dc8230b9cc919b1b86b2

SHA256
dc4da2ccadb11099076926b02764b2b44ad8f97cd32337421a4cc21a3f5448f3

SHA512
3b38a2c17996c3b77ebf7b858a6c37415615e756792132878d8eddbd13cb06710b7da0e8b58104768f8e475fc93e8b44b3b1ab6f70ddf52edee111aaf5ef5667

Download Submit
memory/1672-54-0x0000000075111000-0x0000000075113000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads